sit back

From Longman Dictionary of Contemporary Englishsit back phrasal verb1RELAXEDto get into a comfortable position, for example in a chair, and relaxSit back and relax – I’ll open a bottle of wine.2RELAXEDto relax and make no effort to get involved in something or influence what happensDon’t just sit back and wait for new business to come to you. →sit→ See Verb table